20119500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{263}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 67459392

約数和(自身を除く): 47339892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 85, 90, 100, 102, 125, 150, 153, 170, 180, 204, 225, 250, 255, 263, 300, 306, 340, 375, 425, 450, 500, 510, 526, 612, 750, 765, 789, 850, 900, 1020, 1052, 1125, 1275, 1315, 1500, 1530, 1578, 1700, 2125, 2250, 2367, 2550, 2630, 3060, 3156, 3825, 3945, 4250, 4471, 4500, 4734, 5100, 5260, 6375, 6575, 7650, 7890, 8500, 8942, 9468, 11835, 12750, 13150, 13413, 15300, 15780, 17884, 19125, 19725, 22355, 23670, 25500, 26300, 26826, 32875, 38250, 39450, 40239, 44710, 47340, 53652, 59175, 65750, 67065, 76500, 78900, 80478, 89420, 98625, 111775, 118350, 131500, 134130, 160956, 197250, 201195, 223550, 236700, 268260, 295875, 335325, 394500, 402390, 447100, 558875, 591750, 670650, 804780, 1005975, 1117750, 1183500, 1341300, 1676625, 2011950, 2235500, 3353250, 4023900, 5029875, 6706500, 10059750, 20119500]

約数ペア:

[(1, 20119500), (2, 10059750), (3, 6706500), (4, 5029875), (5, 4023900), (6, 3353250), (9, 2235500), (10, 2011950), (12, 1676625), (15, 1341300), (17, 1183500), (18, 1117750), (20, 1005975), (25, 804780), (30, 670650), (34, 591750), (36, 558875), (45, 447100), (50, 402390), (51, 394500), (60, 335325), (68, 295875), (75, 268260), (85, 236700), (90, 223550), (100, 201195), (102, 197250), (125, 160956), (150, 134130), (153, 131500), (170, 118350), (180, 111775), (204, 98625), (225, 89420), (250, 80478), (255, 78900), (263, 76500), (300, 67065), (306, 65750), (340, 59175), (375, 53652), (425, 47340), (450, 44710), (500, 40239), (510, 39450), (526, 38250), (612, 32875), (750, 26826), (765, 26300), (789, 25500), (850, 23670), (900, 22355), (1020, 19725), (1052, 19125), (1125, 17884), (1275, 15780), (1315, 15300), (1500, 13413), (1530, 13150), (1578, 12750), (1700, 11835), (2125, 9468), (2250, 8942), (2367, 8500), (2550, 7890), (2630, 7650), (3060, 6575), (3156, 6375), (3825, 5260), (3945, 5100), (4250, 4734), (4471, 4500)]